2. -- The economic calendar in the U.S. on Tuesday includes durable goods orders for July at 8:30 a.m. EDT, the Case-Shiller 20-city Index for June at 9 a.m., the FHFA Housing Price Index for June at 9 a.m., and consumer confidence for August at 10 a.m.

3. -- U.S. stocks on Monday rose and the S&P 500 smashed its way through 2,000, bolstering the case that the current rally will continue.

The broad-based S&P 500 advanced 0.48% to 1,997.92, an all-time high, after trading as a high as 2,001.95. The Dow Jones Industrial Average rose 0.44% to 17,076.87. The Nasdaq added on 0.41% to 4,557.34.

Buffett's Berkshire Hathaway BRK.A would invest in the deal in the form of preferred shares, some of the people said. Berkshire is expected to provide about 25% of the deal's financing, one of the people said. The exact structure of Buffett's participation remains unclear and the discussions are ongoing, according to the newspaper.

The takeover, likely valued at about $10 billion or more, could be announced in the next day or two, the people told the Journal.

5. -- Amazon.com (AMZN) is buying streaming platform Twitch Interactive for $970 million in cash as it seeks to take part in video gaming's growth as an online spectator sport.

Twitch is a multi-channel online network built for a generation of people who not only enjoy playing video games, but find it entertaining to watch others who might impart tricks and tips for excelling at their favorite games.

Twitch had 55 million unique visitors in July, up from 20 million in 2012. Most visited the Twitch.tv Web site to watch other people play live or recorded games, competitions interspersed with advertising.

6. -- Electronics retailer Best Buy (BBY) is expected by Wall Street on Tuesday to report second-quarter earnings of 31 cents a share on revenue of $8.99 billion.

7. -- Dish Network (DISH) on Monday filed a 202-page petition with the Federal Communications Commission to block the proposed merger of Comcast (CMCSA) and Time Warner Cable (TWC) .

In the petition, Dish said there is "potential for the merger to significantly damage competitive development of over-the-top (OTT) video and limit consumer access to online video programming."

"The merger would permit and motivate the combined company to hurt or destroy online video rivals through its control over the broadband pipe, passing an estimated two thirds of U.S. households," Dish said in the petition.